[USB] Fix EPO STALL issue in STM32 USB Device library 2.5.1

Issue raised by @makarenya (see stm32duino#388)
USB Specification EP0 should never STALL.

Issue reproduced when using USB 3.0 port.
Device is not recognized if STALL present.

Signed-off-by: Frederic.Pillon <[email protected]>

Author: fpistm

system/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_core.c

@@ -396,7 +396,12 @@ USBD_StatusTypeDef USBD_LL_DataInStage(USBD_HandleTypeDef *pdev, uint8_t epnum,
           {
             pdev->pClass->EP0_TxSent(pdev);
           }
-          USBD_LL_StallEP(pdev, 0x80U);
+          /*
+           * Fix EPO STALL issue in STM32 USB Device library 2.5.1
+           * Issue raised by @makarenya, see #388
+           * USB Specification EP0 should never STALL.
+           */
+          /* USBD_LL_StallEP(pdev, 0x80U); */
           USBD_CtlReceiveStatus(pdev);
         }
       }